Sam Burns fell apart during the final round of the U.S. Open at Oakmont on Sunday, and a controversial ruling on No. 15 may have contributed to his collapse.

OAKMONT, Pa. — Sam Burns is a birdie machine at Oakmont, a label not many expected at this U.S. Open. By avoiding another sloppy finish, Burns posted a 5-under 65 on Friday and set the target for the late starters — and let Scottie Scheffler know the mountain he faced.

Sam Burns has the lead in the U.S. Open on a rain-soaked Oakmont course and faces his biggest test OAKMONT, Pa. — The closest Sam Burns has come to a major championship is sharing a house with a close friend who already has three of them.